Video camera and video signal reproducing apparatus with shake detection and correction operation
First Claim
1. A video camera comprising:
- lens means for collecting light from an object to be photographed;
an image pickup device for converting the light collected by said lens means into an electric signal;
an analog to digital converting circuit for converting the electric signal from said image pickup device into a digital signal;
a memory circuit for storing the digital signal produced by said analog to digital converting circuit;
shake detecting means for detecting a shake of the video camera;
calculating means for obtaining a correction amount from an output signal of said shake detecting means and for generating an optical control signal and an electronic control signal;
optical correcting means responsive to said optical control signal for correcting a shake of an image caused by the shake of the video camera up to a predetermined limit;
optical zoom means included in said lens means for enlarging or reducing the object to be photographed; and
electronic zoom means for enlarging or reducing the object to be photographed represented by said digital signal from said analog to digital converting circuit and for correcting a portion of the shake that exceeds the predetermined limit in response to said electronic control signal.
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Accused Products
Abstract
A video camera includes a lens for collecting a light from an object to be photographed; an image pickup device for converting the light collected by the lens into an electric signal; an analog to digital converting circuit for converting the electric signal from the image pickup device into a digital signal; a memory circuit for storing the digital signal obtained by the analog to digital conversion; a shake detector for detecting a shake of the video camera; calculating unit for obtaining a correction amount from an output signal of the shake detector; a correcting unit for correcting a shake of an image accompanied with a slight shake of a body of the video camera on the basis of an output signal of the calculating means; a zoom system for enlarging or reducing the object to be photographed; and a control unit for changing the correcting unit in accordance with a change of zoom of the zoom system.
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Citations
29 Claims
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1. A video camera comprising:
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lens means for collecting light from an object to be photographed; an image pickup device for converting the light collected by said lens means into an electric signal; an analog to digital converting circuit for converting the electric signal from said image pickup device into a digital signal; a memory circuit for storing the digital signal produced by said analog to digital converting circuit; shake detecting means for detecting a shake of the video camera; calculating means for obtaining a correction amount from an output signal of said shake detecting means and for generating an optical control signal and an electronic control signal; optical correcting means responsive to said optical control signal for correcting a shake of an image caused by the shake of the video camera up to a predetermined limit; optical zoom means included in said lens means for enlarging or reducing the object to be photographed; and electronic zoom means for enlarging or reducing the object to be photographed represented by said digital signal from said analog to digital converting circuit and for correcting a portion of the shake that exceeds the predetermined limit in response to said electronic control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A video camera comprising:
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lens means for collecting light from an object to be photographed; an image pickup device for converting the light collected by said lens means into an electric signal; an analog to digital converting circuit for converting the electric signal from said image pickup device into a digital signal; a memory circuit for storing the digital signal produced by said analog to digital converting circuit; shake detecting means for detecting a shake of the video camera; calculating means for obtaining a correction amount from an output signal of said shake detecting means and for generating an optical control signal and an electronic control signal; optical correcting means responsive to said optical control signal for correcting a shake of an image caused by the shake of the video camera up to a predetermined limit; optical zoom means included in said lens means for enlarging or reducing the object to be photographed; and electronic zoom means for enlarging or reducing the object to be photographed and for correcting a portion of the shake that exceeds the predetermined limit in response to said electronic control signal; wherein said calculating means comprises a first limiter circuit that limits the correction amount in accordance with the predetermined limit. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification